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20 Cards in this Set
- Front
- Back
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Bonus Question: Avogadro was confused as to how much of the various ingredients he should add when making soft tacos. After adding guaca moles of avocado, he thought he needed ______ de Gallo.
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Pico
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Chemistry is the study of ______ and the changes that it undergoes.
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matter
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The three states of matter are ______ , ______ , and _______.
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solid, liquid, and gas
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_______ properties can only be observed when a substance is changed into another substance.
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Chemical
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An example of a ______ property is its boiling point.
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physical
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The term ________ ________ refers to digits that were actually measured.
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significant figures
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Atoms are neither ________ nor ________ in chemical reactions.
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created nor destroyed
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The law of conservation of mass states that the mass of substance present at the end of a chemical process is ______ to the mass of substances present before the reaction took place.
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equal
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The charge on an electron is a ______ ______.
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negative one
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The charge on a proton is a ______ ______.
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positive one
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The mass of an atom is calculated by adding the number of ______ to the number of ______.
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protons, neutrons
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Given: (little 12 on the upper left side) (little 6 on the bottom left side) C (carbon on the periodic table)
Question: The 6 in the symbol represents the _____ _____ while the 12 in the symbol represents the _____ _____. |
atomic number; atomic mass
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Atoms of the same element with different masses are called ______ and only differ by the number of ______.
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isotopes; neutrons
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The _______ _______ is a systematic catalog of the elements which are arranged in the order of their ______ ______.
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periodic table; atomic number
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_______ formulas give the lowest whole- number ratio of atoms of each element in a compound while _______ formulas give the exact number of atoms of each element in a compound.
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Empirical; molecular
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Name three different types of reactions: ________, _______, and _______.
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combustion, combination, and decomposition
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The sum of the atomic weights of the atoms in a molecule is called the ______ ______.
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molar mass
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The units of molar mass are ______.
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g/mol
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A large number infront of a chemical compound is known as the _______.
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coefficient
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What are the two general names for a reaction that is being burned in oxygen?
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1. combustion reaction
2. decomposition reaction |
